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| A Lightweight Key Establishment Protocol for Wireless Sensor Networks |
| Liu Wei; Luo Rong; Yang Hua-zhong |
| Department of Electronic Engineering, Tsinghua University, Beijing 100084, China |
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Abstract In this paper, a lightweight key establishment protocol for wireless sensor networks is proposed. By optimizing information exchanges in the process of key establishment, this temporal initial key based protocol is able to achieve better extensibility and lower energy consumption. Theoretical analysis of finish time and totally connected probability verifies that this protocol is feasible. The simulation results show that, the connected probability is larger than 97% for typical network density. Compared with similar protocols, this protocol needs much less time to finish with enough connected probability. The finish time is less than 5.2s at the network density of 30 nodes per hop. Moreover, energy consumption is only 25% of those of similar protocols, which makes this protocol more suitable for resource constrained sensor nodes.
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Received: 19 March 2009
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Corresponding Authors:
Luo Rong
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2010, Vol. 32 
